12943822993 has 4 divisors (see below), whose sum is σ = 12944054068. Its totient is φ = 12943591920.

The previous prime is 12943822937. The next prime is 12943823023. The reversal of 12943822993 is 39922834921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2234263824 + 10709559169 = 47268^2 + 103487^2 .

It is a cyclic number.

It is not a de Polignac number, because 12943822993 - 2¹⁷ = 12943691921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12943822993.

It is not an unprimeable number, because it can be changed into a prime (12943882993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27583 + ... + 163243.

It is an arithmetic number, because the mean of its divisors is an integer number (3236013517).

Almost surely, 2^12943822993 is an apocalyptic number.

It is an amenable number.

12943822993 is a deficient number, since it is larger than the sum of its proper divisors (231075).

12943822993 is an equidigital number, since it uses as much as digits as its factorization.

12943822993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231074.

The product of its digits is 1679616, while the sum is 52.

The spelling of 12943822993 in words is "twelve billion, nine hundred forty-three million, eight hundred twenty-two thousand, nine hundred ninety-three".